含流体多孔介质的BISQ模型

被引:37
作者
杨顶辉
陈小宏
机构
[1] 清华大学数学科学系
[2] 石油大学地科系
关键词
多孔介质; 孔隙流体; BISQ模型; 弹性波; 衰减; 频散;
D O I
10.13810/j.cnki.issn.1000-7210.2001.02.003
中图分类号
P631.4 [地震勘探];
学科分类号
摘要
BIOT流动和喷射流动是含流体多孔隙介质中固一流相互作用的两种重要力学机制,它们作为一个耦合过程同时对声波或弹性波的衰减和频散产生影响。传统方法将这两种力学机制分开、单独处理,并建立了基于宏观描述的BIOT理论和基于单个孔隙结构的喷射流动理论,这些理论在实际应用中暴露出很大的局限性。Dvorkin和Nur(1993)将BIOT流动机制和喷射流动机制综合起来,提出了统一的BISQ模型[1],这种BISQ模型将基于微观水平的喷射流动机制与固体和流体宏观性质联系起来,建立了弹性波相速度和衰减与固相弹性常数、孔隙率、渗透率、饱和度、流体黏滞度、压缩性、频率以及特征喷射流动参数等之间的关系。对 BISQ模型的综合研究表明:BISQ模型中的喷射流动机制是造成弹性波强衰减、高频散的主要原因;BISQ模型能更真实地预测波的衰减和频散,在采油动态监控和拾取渗透率等各向异性参数方面具有巨大的应用潜力,值得作进一步的研究和开发。
引用
收藏
页码:146 / 159+262 +262
页数:15
相关论文
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